GitLab

Use new method for skipping screen. Add tests for UMA stats.

Bug: 1064561
Change-Id: I953ec454a738fab1e9f58b08e27eec7356965d2d
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2141103Reviewed-by: Roman Sorokin [CET] <rsorokin@chromium.org>
Commit-Queue: Roman Aleksandrov <raleksandrov@google.com>
Cr-Commit-Position: refs/heads/master@{#757956}